The Tree Root is an item from the Underground Realm of the Gnomes. Connor took a chunk of tree root from a section of the mine near the surface. He was able to knock it from the wall of the mine with his War Hammer. He picked it up because one of the three items that Apothecary Gnome had asked him to get was a piece of tree root. She needed the items before she would let Connor buy the Essence of Sun Tzu.
Behind the scenesEdit
This is referred to as the Oak Root inside the MONSTERS.KS file in the Gnome files.